CVE-2025-67619 is a vulnerability classified as deserialization of untrusted data in the designthemes Kids Heaven product, specifically affecting versions up to and including 3.2. Deserialization vulnerabilities occur when an application deserializes data from untrusted sources without proper validation, allowing attackers to manipulate serialized objects to execute arbitrary code or inject malicious objects. In this case, the vulnerability enables object injection, which can lead to remote code execution, privilege escalation, or other malicious activities compromising the system’s confidentiality, integrity, and availability. The CVSS 3.1 base score of 8.8 reflects a high severity, with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), requiring low privileges (PR:L), no user interaction (UI:N), unchanged scope (S:U), and high impact on confidentiality (C:H), integrity (I:H), and availability (A:H). This means an attacker with limited privileges can remotely exploit this vulnerability without any user interaction, potentially leading to full system compromise. The vulnerability was reserved in December 2025 and published in January 2026, with no known exploits in the wild yet. The lack of patch links suggests that a fix may not be publicly available at the time of this report, increasing the urgency for organizations to implement interim mitigations. The affected product, Kids Heaven, is a theme or plugin likely used in children’s websites or educational platforms, which may be integrated into web applications or content management systems, increasing the attack surface if exposed to the internet.

For European organizations, the impact of CVE-2025-67619 can be significant, especially those operating in sectors related to education, child services, or entertainment where Kids Heaven is deployed. Exploitation could lead to unauthorized data access, data manipulation, service disruption, or full system takeover, potentially exposing sensitive personal data of children and users, violating GDPR and other data protection regulations. The high impact on confidentiality, integrity, and availability means that critical services could be disrupted, leading to reputational damage, regulatory fines, and operational downtime. Given the remote exploitability and no requirement for user interaction, attackers could automate attacks at scale, increasing the risk of widespread compromise. Organizations relying on Kids Heaven without timely patches or mitigations may face targeted attacks or opportunistic exploitation, especially in countries with higher adoption or strategic interest in child-related digital services.

1. Immediate network-level controls: Restrict access to the Kids Heaven application to trusted IP addresses or VPNs to reduce exposure. 2. Monitor logs and network traffic for unusual deserialization patterns or suspicious object injection attempts. 3. Implement Web Application Firewalls (WAFs) with custom rules to detect and block malicious serialized payloads targeting the vulnerability. 4. Apply principle of least privilege to accounts and services running Kids Heaven to limit potential damage from exploitation. 5. Regularly update and patch the Kids Heaven product as soon as vendor patches become available. 6. Conduct code reviews and security testing focusing on serialization and deserialization processes within the application. 7. Educate development and security teams about secure deserialization practices to prevent similar vulnerabilities. 8. If patching is delayed, consider temporary disabling or isolating the vulnerable component until a fix is applied.